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f=1,5dm=15cm
p=e*f/2
P=8*15/2
P=60 cm²
f= 15cm
h=17cm
z pitagorasa 1/2 e= 4
1/2 f= 7,5
a= 4√3
ob= 4a
ob= 16√3
ale nie jestem pewna :)